Clock



FIG. 1 is a perspective front view from one side and above of a clock showing a first embodiment of my new design;

FIG. 2 is a perspective rear view from one side and below of the clock of FIG. 1;

FIG. 3 is a perspective front view from one side and above of a clock showing a second embodiment of my new design;

FIG. 4 is a perspective rear view from one side and below of the clock of FIG. 3;

FIG. 5 is a perspective front view from one side and above of a clock showing a third embodiment of my new design;

FIG. 6 is a perspective rear view from one side and below of the clock of FIG. 5;

FIG. 7 is a perspective front view from one side and above of a clock showing a fourth embodiment of my new design; and

FIG. 8 shows a perspective rear view from one side and below of the clock of FIG. 7. 

The ornamental design for a clock, as shown. 